Which one of the ECG 12 lead correspond to ECG in SHHS1 Database?
How does 2 snap electrodes measure 2 ECG Leads in MrOS?
Which ECG 12 leads correspond to ECG R and ECG L in MrOS Database?
Relevant information:
[White (-) electrode 3-5 cm.(2 finger breadths) below midpoint of right clavicle. Red (+) electrode is below the left ribcage
The SHHS 12-lead ECG was a separate test (done at rest, in clinic) from the ECG signal from the overnight sleep monitoring.
I'll ping someone else on the team regarding your other ECG lead questions.
Thank you for the prompt reply.
Thanks for letting me know that 12 leads ECG and Polysomnography(PSG) are different experiments.
The ECG in SHHS1 is a modified lead II. In MrOs there are two electrodes which collect their own signal. One can reference ECG R to ECG L to obtain a modified Lead II signal.
Thank you for the prompt reply. I tried to check ECG signal in 131 records (shhs1-200001~200131), but only shhs1-200074 looks like lead II, other records ECG looks like lead aVR. Is that an ECG upside-down? Is there a marker 'Invert'?